package field_method13;
public class Main {
    public static void main(String[] args) {
        Person person = new Person();
        person.setAge(25);
        System.out.println("年龄：" + person.getAge());
        person.setAge(-1);
        System.out.println("年龄：" + person.getAge());
        person.setAge(120);
        System.out.println("年龄：" + person.getAge());
    }
}

